fiber

Fiber supplements

Half of the 6,987 fiber supplements in the NIH label database that print an amount list 2 g or less per serving; the middle half list 1 g to 4 g (DSLD version 9.4.0, January 2026). The 506 products whose only supplement ingredient is fiber list a median of 2 g.

How much fiber do supplements contain?

The median product lists 2 g per serving. One in ten lists 1 g or less, one in ten 6 g or more. The amount printed most often is 1 g (2,773 products).

Which products list the most fiber?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• QCarbo32 Grape FlavorHerbal Clean16 g
• Lean Meal Grass-Fed Whey Protein VanillaAdaptogen Research16 g
• Lean Meal Grass-Fed Whey Protein ChocolateAdaptogen Research16 g
• QCarbo32 Tropical FlavorHerbal Clean16 g
• Complete Whole Food Health Optimizer Natural FlavorSequel Vega15 g
• Complete Whole Food Health Optimizer Berry FlavorSequel Vega15 g
• Complete Whole Food Health Optimizer Vanilla Chai FlavorSequel Vega15 g
• Liquid Fiber Sugar Free OrangeNature's Way15 g

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 2 g; those entered in 2025, 1.2 g.

In which products and brands?

Brands listing it most: Nature's Plus (123), Nature's Way (116), Garden of Life (76), XYMOGEN (76), Natural Factors (74), NOW (67), Metagenics (64), Enzymatic Therapy (61), Source Naturals (60), Amazing Grass (57).

Every product listing fiber

8,718 products, A to Z by name (page 132 of 175), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Pure Konjac Root Glucomannan 500 mgGood 'N Natural · off the market1 g
• Pure Microalgae Superfood BlendHealth Ranger Select0.2 g
• Pure Moringa PowderKuli Kuli2 g
• Pure Pea ProteinOL Olympian Labs · off the market1 g
• Pure Pea Protein UnflavoredOL Olympian Labs Inc.1 g
• Pure Plant Protein Natural Vanilla FlavorLife Extension2 g
• Pure Power Protein BananaDr. Mercola · off the market8 g
• Pure Power Protein Banana FlavorDr. Mercola8 g
• Pure Power Protein ChocolateDr. Mercola · off the market7 g
• Pure Power Protein Chocolate FlavorDr. Mercola7 g
• Pure Power Protein StrawberryDr. Mercola · off the market8 g
• Pure Power Protein Strawberry FlavorDr. Mercola8 g
• Pure Power Protein VanillaDr. Mercola · off the market8 g
• Pure Power Protein Vanilla FlavorDr. Mercola8 g
• Pure Pro 35 ChocolateA.B.B. American Body Building · off the market3 g
• Pure Pro 35 Cookies And CreamA.B.B. American Body Building · off the market1 g
• Pure Pro 35 Vanilla SmoohtieA.B.B. American Body Building · off the market1 g
• Pure Pro 50 Banana CreamA.B.B. American Body Building · off the market2 g
• Pure Pro 50 Chocolate Peanut ButterA.B.B. American Body Building · off the market3 g
• Pure Pro 50 Cookies And CreamA.B.B. American Body Building · off the market2 g
• Pure Pro 50 Milk ChocolateA.B.B. American Body Building · off the market3 g
• Pure Pro 50 StrawberryA.B.B. American Body Building · off the market2 g
• Pure Pro 50 Vanilla BeanA.B.B. American Body Building · off the market2 g
• Pure Pro ChocolateABB Performance · off the market1 g
• Pure Pro VanillaABB Performance · off the marketno amount
• Pure Protein 100% Whey Protein Rich ChocolateWorldwide Sport Nutritional Supplements · off the market1 g
• Pure Protein 100% Whey Protein Rich ChocolatePure Protein · off the market1 g
• Pure Protein 100% Whey Protein Vanilla CreamWorldwide Sport Nutritional Supplements · off the market1 g
• Pure Protein 100% Whey Rich ChocolateWorldwide Sport Nutritional Supplements1 g
• Pure Protein ChocolatePower Blendz1 g
• Pure Protein Complete French VanillaPure Protein3 g
• Pure Protein Fiber Mix UnflavoredCreative Bioscience · off the market5 g
• Pure Protein Rich ChocolateWorldwide Sport Nutritional Supplements1 g
• Pure Protein Shake Banana CreamWorldwide Sport Nutritionno amount
• Pure Protein Shake Banana CreamMET-Rxno amount
• Pure Protein Shake Chocolate MintWorldwide Sport Nutritional Supplements2 g
• Pure Protein Shake Cookies 'N CremeMET-Rx2 g
• Pure Protein Shake Frosty ChocolateMET-Rx1 g
• Pure Protein Shake Strawberry CreamMET-Rxno amount
• Pure Protein Shake Vanilla CreamMET-Rxno amount
• Pure Protein Shake Vanilla CreamPure Proteinno amount
• Pure Protein Super Food Vanilla BeanPure Protein1 g
• Pure Protein VanillaPower Blendzno amount
• Pure Sea BuckthornPure Health Naturally · off the market0.5 g
• Pure Veggie Protein UnflavoredCreative Bioscience · off the market1 g
• Pure, Natural Hemp Oil 1250 mgRapidCBDno amount
• Pure, Natural Hemp Oil 2500 mgRapidCBDno amount
• Pure, Natural Hemp Oil 500 mgRapidCBDno amount
• PureChia CapsulesHealthy Choice Nutritionals0.41 g
• PurEdge Plant-Based Gainer Natural ChocolateGNC Earth Genius · off the market4 g

Where next?

• Fiber gummies
• Check an amount of fiber
• Labels above the upper limit
• All ingredients